ios – swiftui TextField() can’t be tapped in sure ordering of containers

I’ve run into a wierd conduct and hoping somebody may help me perceive why it’s occurring so I can keep away from issues like this sooner or later. I’ve acquired a sophisticated View however I’ve stripped it alllll the way in which down so far as I can whereas nonetheless demonstrating the issue/bug/no matter, and I’ve included that beneath.

The actual view has a ZStack with a VStack and a Grid, and so forth, however I’ve stripped all of it out till I acquired all the way down to this.

// stripped down model of the view
struct DebugWTF: View {
        
    @State var debugstring: String = ""
    
    var physique: some View {
        ScrollView {
            GeometryReader { geometry in
                TextField("placeholder_eg", textual content: $debugstring)
            }
        }
    }
}

I’ve found that if I modify the ordering of the containers, then the TextField() begins working usually.

var physique: some View {
    ScrollView {
        GeometryReader { geometry in 
            TextField(...) // is NOT tappable
        }
    }
}

then my TextField() can’t be tapped on. Nevertheless it DOES work if I swap these:

var physique: some View {
    GeometryReader { geometry in 
        ScrollView {        
            TextField(...) // IS tappable
        }
    }
}

When that labored, I believed perhaps the ScrollView was behaving unusually if its direct little one was the GeometryReader, however even when I insert a ZStack between them, the TextField() shouldn’t be tappable once more:

var physique: some View {
    ScrollView {
        ZStack {
            GeometryReader { geometry in 
                TextField(...) // is NOT tappable
            }
        }
    }
}

Can anybody clarify why the ordering of those is inflicting an issue? I might like to grasp what’s basically occurring in order that I can perceive how one can keep away from such issues sooner or later.